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Old 07-24-2009, 04:03 PM
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Re: 1999 Blazer ignition problem

Factory spec for fuel pressure is 60psi to 66psi, key on, engine off, fuel pump running. At 58psi the fuel mixture is lean and could cause a secondary ignition voltage spike like you're experiencing.

As far as tune up parts, AC Delco 41-932 plugs, D328A distributor cap, D465 rotor, AC Delco 9746KK or Autolite 96871 Pro Series wires. These are the best parts you can get, (at any price), and will give the best performance. Anything else, and you're bound to experience trouble. Make sure you use silicone dielectric on all terminals, both inside and out, of the cap, and at the spark plugs.
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